var mongoose=require('mongoose');
const News=require('../model/news.model');

//增
exports.create=function(req,res,next){
	const news=new News(req.body);
	//实例化对象，req.body代表是post的数据提交，并且参数从body中获取
	news.save().then(data=>{
		//数据保存，在保存以后将数据用json形式进行输出
        res.json(data)
        console.log(data);
	});
};

//删
exports.remove=function(req,res,next){
	var id=req.params.id;
	News.findByIdAndRemove(id,function(err,data){
		res.json({message:'删除成功'});
	});
};
//
exports.getIData = function(req,res,next){
	const id = req.params.id;
	News.findById(id,function(err,data){
			res.json(data);
	})
};
//删除多个
exports.removes=function(req,res,next){
	var ids=req.body.ids;
	//ids=ids.split(",");
	
	if(ids.length>0){
		News.remove({_id:{$in:ids}}).then(data =>{
			res.json({"message":"多条记录删除成功"})
		})
		
	}
};


//改
exports.update=function(req,res,next){
    //先找到一个id值
	var id=req.params.id;
	News.findByIdAndUpdate(id,{$set:req.body},{new:false}).then(data=>{
		res.json(data);
	
	});
};

//查
exports.list = function(req, res, next) {
	var page = req.body.page ? req.body.page : 1;
	var rows = req.body.rows ? req.body.rows : 5;
	var queryCondition = {};
  
	if (req.body.title && req.body.title.trim().length > 0) {
	  title = req.body.title;
  
	  queryCondition = {
		title: new RegExp(title, 'i')
	  };
	}
  
	if (req.body.cateId && req.body.cateId.trim().length > 0) {
	  cateId = req.body.cateId;
	  queryCondition = Object.assign(queryCondition, {
		cateId: cateId
	  });
	}
  
	News.paginate(queryCondition, { page: +page, limit: +rows }, function(
	  err,
	  result
	) {
	  result.rows = result.docs;
	  delete result.docs;
	  res.json(result);
	});
  };
  
